Free Audio Converter

It opens MP3, WAV, OGG and AAC files and saves to the same four formats. M4A, FLAC and WMA files are not accepted, and adding one shows an Unsupported file type message that lists the formats you can use.

Add your WAV, OGG or AAC files and keep MP3, which is preselected for every file. Choose a bitrate or leave it on Auto, which encodes at 256 kbps. Click Convert All, then download each file or the whole batch as a ZIP.

Yes. Add as many files as you like, each up to 500 MB, and click Apply to all files to give them the same output. They convert one after another, so if one fails, the others still finish and you can retry it.

Mostly, if you save to WAV, which stores uncompressed 16-bit audio and adds no compression of its own. If you need MP3 or AAC, pick 320 kbps. A 24-bit WAV is saved as 16-bit, and no format can restore detail an earlier MP3, AAC or OGG save removed.

You can change the bitrate for MP3 and AAC. Auto is 256 kbps, and presets run from 32 to 320 kbps for the whole batch. On Auto, OGG uses a set quality level instead of a bitrate. There is no sample rate setting, so files keep their original rate.

Yes, each file can be up to 500 MB, and larger files are turned away with a message that names the limit. There is no cap on how many files you add and no daily limit. Big batches use more browser memory, so split them if your browser slows down.

No. This page only takes audio files in MP3, WAV, OGG and AAC. To pull the sound out of an MP4, MOV or other video, use the free Video to MP3 tool, which saves the audio track as an MP3 file.

Choose MP3 when the file has to play on almost any device. Choose WAV for editing, since it is uncompressed and by far the largest. Choose AAC for good sound at lower bitrates; it saves as a .aac file, not .m4a. Choose OGG when a game engine or web project asks for it.

Check that it is an MP3, WAV, OGG or AAC file under 500 MB. The page also downloads its audio engine (about 32 MB) when it opens, so it needs a working connection. If one file fails, the rest still finish, and the retry button on that file tries it again.

It is safe to use, and no account is needed. Your audio is converted in this browser tab and never sent to our servers, and downloads carry no watermark. The page fetches its audio engine from a public code library and sends basic usage stats, such as time spent in the editor, but never your file names or sound.